Created attachment 144884 [details]
Screenshot of sanedialog.ui
The scanner dialog Insert - Media - Scan - Select Source has no Help button.
Dialog also has buttons aligned vertically.
Dialog is extensions/uiconfig/scanner/ui/sanedialog.ui
Build ID: 2419fa71d8b2223a50f596d5db7721f6213d4f87
CPU threads: 4; OS: Linux 4.15; UI render: default; VCL: gtk3;
Locale: ca-ES (ca_ES.UTF-8); Calc: threaded
Build ID: 3ca42d8d51174010d5e8a32b96e9b4c0b3730a53
Threads 4; Ver: 4.15; Render: default;